YOU SAID:
The only impossible journey is the one you never began
INTO JAPANESE
唯一不可能な旅はあなたが始めたことのない旅です
BACK INTO ENGLISH
The only impossible journey is a journey you have never started
INTO JAPANESE
唯一不可能な旅はあなたが始めたことがない旅です
BACK INTO ENGLISH
The only impossible journey is a journey you have never started
That didn't even make that much sense in English.